Ice-cream freezer.



narran srnrns garni-ir onirica- THEOJ'DOBE L. VALERIUSVAND OLAF LARsEN, oF FORT n'rKiNsomwIscoNsIiy, Assassi- ORS- TO ICREAMERY. PACKAGE MANUFACTURING COMPANY, A lCOItPOIIaJA'lfIOlYI 0F ILLINOIS.

-igasogsaa To all whom it may concern Be it known that we, THnoDoRE L. VALERIUS and OLAF LARSEN, citizens of the United States, residing at Fort Atkinson, in' the county of J eiferson and State of Wisconsin, have invented certain new and useful` Improvements in Ice-Cream Freezers,

of which the following is a specication.

Our invention relates to ice-cream freezers and one of its objects is to provide a freezer in' which every part shall be easily and conveniently accessible for cleaning' purposes. In certain machines of tle prier art, the agly tator or dasher cannot be removed until a key has been removed from thegearing.l This objection is obviated by our invention.

Another object of, our invention is to prol vide means whereby all the'mechanical portions of the freezer may be readily` removed' 1n case repairs are necessary. Not only is the agitator readily removable, but the driving gears and pulleys are 'arranged soas to form a Aunitary structure which may be removed from the machine base, taken to the repair shop, and replaced on the' machinebase after repairs have been made. This structure, including the support for the gear and pulley shaft, as well as the gears and pulleys mounted thereon, is hereinafter for convenience termed the gear j ack. In the accompanying drawings, Figure is a side elevation of an ice cream freezer embodying the principles of our invention. Fig. 2 is a fragmental vertical sectional view along the axis of the freezing cylinder.A

Fig. 3 `is a transverse vertical section/' through the freezing cylinder ,andtlieagitating means. Fig. 4 is a ln'gitudinal sectional view of a portion of the agitating means. Fig. 5 is a perspective view of a clutch collar. Fig. 6 is a fragmental front elevation of the freezer. Fig. 7 is a horizontal sectional view taken in theA plane -of line 7 of Fig. 1. Fig. 8 is a section Von line 8-8 of Fig. 7.

In the embodiment of our invention herein illustrated, there is provided a base' 1 which supports a freezing cylinder 2 and a. gear jack 3. The base 4or frame of the gear Jack is indicated by 4. The freezing cylinder 2 is provided with a iixed rear head 16 and a removable front head 17 the latter being detachably secured to the cylinder body by suitable means such as bifurcxated lugs 23 on the head, bolts 24 pivoted on the cylinder in Fig. 3.

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Specification of Letters'latent PQQDQQJUM@ 319, 1917; Application led January 13, 14913. Serial 310.741,62. i

body and wing nuts 25 on the bolts. 1 (See Figs. 1 and 6).

Within the freezing cylinder, there-is pro-j vided agitating means which comprises two sections, an innerand anouter, arranged to be revolvedv 1n opposite directions, 'The inner .agitator section comprises'a shaft 36 to which are fxedoppositely extending al-l ternately spaced beater paddles 37 set at an angle so'that they will have a tendency,

whenvthe shaft is rotated'in th'e proper di` -recti0n, to drive the material in the cylinder toward the rear head 16. This shaft `36 isVa supported at its forward endby a stub shaft 34 (Fig. 4) which is rotatably mounted in a suitable bearing 'in the front head 17, and the,shaft.36 is supported at its rear end by a shaft-33 which extends Athrough the 'rear head 16 and is journaled'in a clutch collar 38, said clutch collar being in turn rotatably gear jack 3 to be presently I prises two spiders 40 and 41 located at opposite ends. of the cylinder and each comprising four arms radiating from a central hub, said hubs beinggrot'atably mounted upon the shafts 34 and 33 respectively. The hub der isshaped to have a detachable engagement with the clutch collar 38. To the opposite arms of the two spiders are attached scraper bars 42 and sweep bars. 43 whichex.-

, of the spider 40 at the rear end of the cylintend longitudinally of the cylinder andare positioned in.' alternate relation as indicated In the preferred form, each sweep bar is provided with a series of diagonal ribs 44 adapted, when the spiders are rotated in the proper direction, to move the contents of the cylindertoward the front head 17. The' scraper bars42 are pivoted in the spider'arms and are arranged to contact with the inner periphery of the cylinder to 'scrape the frozen material therefrom. t

will be understood thatv the cylinder is equipped eXteriorly, with suitable refrigerating means which may comprise a spiral conduit and connections for passing suitable freezing fluid therethrough.

` We will next describe the means for rotating the inner and outer agitator sections in opposite directions.A The gear jack 3 is re` `movably` mounted on the 'base 1 and is sei alined. The gear` wheels 56 and 57 are ro-.

`curedto said base by means ofmap. screws 5 and to the cylinder' head 16v by cap screws 6.' The 'gear' jack comprises a bracket arm 46 to support thev outer end of a drive shaft 47 which turn's'in bearings-48 and 49. A drive pulley 50 is .keyed to the shaft 47l and; a-nn lidler 51 is revelubly mounted on'said shaft. l'

A belt shifter 52is supported by va bracket 53 attached to the bracket arm'46.-

' Connected to the shaft47 isabevel ypinion 54 which meshes with bevel spur gears 56 and 57. Said spur gears have hubs or sleeves- 55 which are supportedin a bearing 55a. The gear 56 has a sleeve orI hub A56 which is mounted in a bearing 58, and the gear 57. has a sleeve or hub 57 which is supported in a bearing59. The bearings 55, 58 and 59 are tated in opposite directions by the pinion 54. The hub .56a of the gear'wheel 56 is shaped' to have a detachable engagement with. the clutch collar 38, while the hub 57a of,tlie gear wheel 57 'has a driving connection with the shaft 33 by means of keys 60 'carried by a collar 60, The collar 60EL is mounted on the end of the hub 57a and is held in placeA by awasher 6l anda screw 62.

Convenient access is afforded vto every part of the freezer for cleansing purposes. I' The' front head 17 may be removed'by loosening' the wing nuts 25' on the bolts 24, and after the screw 62 and Washer 61 have been' removed, theI entire agitatingmeans may be drawn out as' a unit through the o pen end of the cylinder.

' If it becomes necessaryto make repairs in any may shop,

portion of the gearing, the gear jack' 3 be removed bodily and vtaken to the by removing the screws 5, 6 and 62.

'It will be apparent that lthe gear jack may of th'e heads of the cylinder, 'saidl collar having clutch faces on bot ends thereof, one of said agitator sections being arranged to engage the inner clutch face of the collar, a shaft rotatably mounted in the collar and permanently attached at its inner end to the' other agitator section, a gear g'ack comprisringa support removably mounted on said base and having a plurality of bearings coaXial with said, cylinder, two' gears inde` pendently supported in. said bearings, and means for4 driving said gears, one of the rgaadsee gearshavin'g a clutch connection with theA outer'end of .said collar, theV other gearv being non-rotatably, associatedwith' said` shaft, the

` latter passing through both gear wheels, and `the gear jack asa unit -beingwithdrawable fromsaid baseand from the shaft.`

.2. An ice-cream freezer comprising a -base a freezing cylinder on said base,.ag1t at1ng means 1n said cylinder, a gear Jackrem'ov ably mounted on said base and comprising a plurality `of bearings, gear wheelssupported f by said bearings, and means for rotating.v said gear wheels,l and a shaft permanently attached to said agitating means and extend# ing` axially Avthrough said bearings and ,i

through said gear wheels,said gearjack be@ ing withdraivable as a unit'from the base: `and'fnomv .said shaft in a' direction parallel with the shaft. l y r 3, An ice-cream freezer ccmprising'a freezel ing cylinder, a gear 'jack comprising three` alined bearings, .two 'wheels each having two sleeves rotatably mounted in two of said bearings', and means for rotatingsaid Wheelsy in opposite `directions, 'a .shaft extending through saidy sleeves and connected to 'a f sleeveof one ofsaid wheels, agi'tating means in the cylinder'connected .to said shaft, and'A agitating means in die cylinder yarrangedto` Y I be vdriven by a sleeveofthe other wheel'.

`'4. An ice cream freezer comprising a bas'eafj. a freezing cylinder mounted thereon, agltating means in the' cylinder comprising tw0- se'ctions arranged forindependent rotation,'

aPgear jackmourite'd on saidwbase and comy,p'rising a support having a plurality of bearings,.,gear wheels independently supp )rted`v` in said bearings, and vmeans for ,ind'epend-fv ently rotating said geanwhee'ls, each of said .A l gear wheels having an operative disengage-- .able connection with one of the agitator sections, permittingthe agitating means to be' l disengaged from the gearjack and-with? drawn from the cylinder, the, supporting j base of the gear jack being detachably secured to the `machine base, whereby the gear jack as alunit may be disen aged'fromtllle agitating means and remove fromthe Ina-v chine.

5. Anice-crcam freezer comprising a base,

a freezing cylinder on saidlbase,-.heads forsaid cylinder, a l dutch-collarrotatably mounted in and extending throughA one f said heads," agitating means in the cylinder having a clutch connection with the inner` end of saidcollar, three b eaisingson said base, said .bearings bein axiallyalined with said cylinder, two w'hee si, each having'two sleeves rotatably mounted inatwo of 'said I bearings, a shaft extendingth'rough. said sleeves and throu h saidcollar-,and 'extendin'g into saidcylmder, 'agitating'me'ans' in the lcylinder attached to said shaft, a Adriving connection between saidfsha'ft and; a sleeve of one of said wheels, a yclutch conlao,

nectin between the sleeve of the other means for rotating said wheelsI in opposite direct-ions.

6. An ice cream freezer Comprising a base, a freezing cylinder mounted thereon, agitating means in the cylinder comprisingtwo sections arranged for independent rotation, av gearjaek mounted on said base and comprising a support haring a plurality of bearings coaxial .with said cylinder, gear wheels independently supported in said bearings, and means for indeliendently rotating said gear wheels, a clutch collar passing aXiall)v through one of the Cylinder heads' and haring ay disengageable eonneetion at its inner end with one of the agitator sections, the. collar haring a disengageable connection at its outer end with one of Said gear wheels, ashaft permanently fixed at its inner end to the other agitator section and passing through said clutch eollar and through the two gear wheels and non-rotatably connected to thek other gearA wheel, the support ol' the. gear jack being x detachably bolted to the machine base and to the cylinder, the agitating means being disengageable from the gear jack and ivithdrawable from the cylinder without disturbing the gear jack, and the gear jack being detachable from the machine base and the Cylinder and being.withdrawable along said shaft to disassoeiate the jack Jfrom the ma chine Without disturbing said agitating means.

7. An ice cream freezer having,'in eolnbination, a cylinder, a" rear head secured to the cylinder, a stufling-box bearing in said rear head, a front head detacliably secured to the cylinder, a tubular driving element rotatabl)v "supported in said stuffing-box bearing, an agitator within the cylinder and rotatably"'s11pported at its front end by the front head, Asaid agitator comprising a seetion haring a detachable rlutch engagement with the inner end of said driving element, and another .section haring a shaft rotatabl \Y and witlnlran'ably supported in said driving element` .and means for rotating said -driving element, said shaft being detachabhr wnmeeted at a point outside the cylinder to said rotating means.

Tn testimony whereirl we affix our signatures in the presence o't two witnesses.

L. A. FORSYTH, 11A. SIEGE. 

